test/normalize.c

   1 /*
   2  * Helper application to test normalization of declaration specifiers.
   3  * Copyright © 2021 Nick Bowler
   4  *
   5  * This program is free software: you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation, either version 3 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  17  */
  18
  19 #include <config.h>
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22 #include <string.h>
  23 #include <getopt.h>
  24
  25 #include "cdecl.h"
  26 #include "cdecl-internal.h"
  27 #include "test.h"
  28
  29 #define PROGNAME "normalize"
  30 static const char *progname = PROGNAME;
  31 static const char sopts[] = "f:VH";
  32 static const struct option lopts[] = {
  33         { "file", 1, NULL, 'f' },
  34         { "version", 0, NULL, 'V' },
  35         { "help", 0, NULL, 'H' },
  36         { 0 }
  37 };
  38
  39 static void print_usage(FILE *f)
  40 {
  41         fprintf(f, "Usage: %s [options]\n", progname);
  42 }
  43
  44 static void print_help(void)
  45 {
  46         const struct option *opt;
  47
  48         print_usage(stdout);
  49         puts("Test normalization of declaration specifiers.\n");
  50         test_print_options(lopts);
  51 }
  52
  53 static unsigned to_spectype(const char *tok)
  54 {
  55         if (!strcmp(tok, "typedef")) return CDECL_STOR_TYPEDEF;
  56         if (!strcmp(tok, "extern")) return CDECL_STOR_EXTERN;
  57         if (!strcmp(tok, "static")) return CDECL_STOR_STATIC;
  58         if (!strcmp(tok, "auto")) return CDECL_STOR_AUTO;
  59         if (!strcmp(tok, "register")) return CDECL_STOR_REGISTER;
  60         if (!strcmp(tok, "inline")) return CDECL_FUNC_INLINE;
  61         if (!strcmp(tok, "restrict")) return CDECL_QUAL_RESTRICT;
  62         if (!strcmp(tok, "volatile")) return CDECL_QUAL_VOLATILE;
  63         if (!strcmp(tok, "const")) return CDECL_QUAL_CONST;
  64         if (!strcmp(tok, "void")) return CDECL_TYPE_VOID;
  65         if (!strcmp(tok, "signed")) return CDECL_TYPE_SIGNED;
  66         if (!strcmp(tok, "unsigned")) return CDECL_TYPE_UNSIGNED;
  67         if (!strcmp(tok, "char")) return CDECL_TYPE_CHAR;
  68         if (!strcmp(tok, "short")) return CDECL_TYPE_SHORT;
  69         if (!strcmp(tok, "long")) return CDECL_TYPE_LONG;
  70         if (!strcmp(tok, "int")) return CDECL_TYPE_INT;
  71         if (!strcmp(tok, "float")) return CDECL_TYPE_FLOAT;
  72         if (!strcmp(tok, "double")) return CDECL_TYPE_DOUBLE;
  73         if (!strcmp(tok, "_Complex")) return CDECL_TYPE_COMPLEX;
  74         if (!strcmp(tok, "_Imaginary")) return CDECL_TYPE_IMAGINARY;
  75         if (!strcmp(tok, "_Bool")) return CDECL_TYPE_BOOL;
  76         if (!strcmp(tok, "struct")) return CDECL_TYPE_STRUCT;
  77         if (!strcmp(tok, "union")) return CDECL_TYPE_UNION;
  78         if (!strcmp(tok, "enum")) return CDECL_TYPE_ENUM;
  79
  80         return CDECL_TYPE_IDENT;
  81 }
  82
  83 int do_normalize(char *line, size_t n)
  84 {
  85         struct cdecl_declspec *specs = NULL, **newspec = &specs;
  86         char *tok = NULL;
  87
  88         while ((tok = strtok(tok ? NULL : line, " "))) {
  89                 struct cdecl_declspec *spec = malloc_nofail(sizeof *spec);
  90
  91                 spec->next = NULL;
  92                 spec->ident = NULL;
  93                 spec->type = to_spectype(tok);
  94                 switch (spec->type) {
  95                 case CDECL_TYPE_STRUCT:
  96                 case CDECL_TYPE_UNION:
  97                 case CDECL_TYPE_ENUM:
  98                         spec->ident = strtok(NULL, " ");
  99                         break;
 100                 case CDECL_TYPE_IDENT:
 101                         spec->ident = tok;
 102                 }
 103
 104                 *newspec = spec;
 105                 newspec = &spec->next;
 106         }
 107
 108         line = malloc_nofail(n);
 109         line[0] = 0;
 110         if (specs) {
 111                 specs = cdecl__normalize_specs(specs);
 112                 cdecl__explain_specs(line, n, specs, -1);
 113         }
 114         printf("%s\n", line);
 115         free(line);
 116
 117         while (specs) {
 118                 struct cdecl_declspec *c = specs;
 119                 specs = specs->next;
 120                 free(c);
 121         }
 122
 123         return 0;
 124 }
 125
 126 int main(int argc, char **argv)
 127 {
 128         int opt, ret = EXIT_SUCCESS;
 129         char *filename = NULL, *line = NULL;
 130         FILE *infile = stdin;
 131         size_t n = 0;
 132         ssize_t rc;
 133
 134         while ((opt = getopt_long(argc, argv, sopts, lopts, NULL)) != -1) {
 135                 switch (opt) {
 136                 case 'f':
 137                         filename = optarg;
 138                         break;
 139                 case 'V':
 140                         test_print_version(PROGNAME);
 141                         return EXIT_SUCCESS;
 142                 case 'H':
 143                         print_help();
 144                         return EXIT_SUCCESS;
 145                 default:
 146                         print_usage(stderr);
 147                         return EXIT_FAILURE;
 148                 }
 149         }
 150
 151         if (filename) {
 152                 infile = fopen(filename, "r");
 153                 if (!infile) {
 154                         perror(filename);
 155                         return EXIT_FAILURE;
 156                 }
 157         }
 158
 159         while ((rc = getline(&line, &n, infile)) >= 0) {
 160                 if (rc > 0 && line[rc-1] == '\n')
 161                         line[rc-1] = 0;
 162                 if (do_normalize(line, n) < 0)
 163                         ret = EXIT_FAILURE;
 164         }
 165
 166         free(line);
 167         return ret;
 168 }